Elara Ashwyn exists between two worlds—and she doesn't remember either of them. By day, she's a mortal bookshop girl who fears the dark. By midnight, she becomes Nyx—the immortal Queen who's ruled the Shadow Realm for three hundred years. But when dawn comes, Elara remembers nothing. When the Beast King Kael appears claiming he's searched for her across lifetimes, everything shatters. He knows about her transformations. He knows about both worlds. And he knows the ancient curse splitting her between them will kill her in eleven months. To survive, Elara must merge with her midnight self. To break the curse, both halves must love the same man. But becoming whole means choosing which world to rule—and which version of herself to sacrifice. A dark romantasy of split souls, forbidden love, and a queen caught between two impossible choices.